Improvement in millstone-dresses



` G. NATCHER.

Y Mlstone Dress.

No. 48,831. y Patented 1111y18, 1865.'

m@ MMM', l A W -UNITED- STATES PATENT OFFICE.

'GABRIEL NATCHER., on sIDNEY, oHro.

IM PROVEM EINT IN M I LLS'TONE-DRESSES.

Specification forming part of Letters Patent No. 48,831, dated July 18, 1865.

To all 'whom it may concern'.-

Be it known that I, GABRiEL NATCHER, of Sidney, in the county of Shelby and State of Ohio, have made certain new and useful ImprovementsinMilIstone-Dresses; andldohereby declare the following to be a full, clear, and exact description of the same, reference being had to the annexed drawings, which are made part of this specification, and in which- Figure 1 shows a face view of the stone, and Fig. 2 the side or elevation ot' the stone.

Similar letters indicate like parts in the two figures.

The object of my improvement is to attain a more efcient dress, one which will grind faster and better, operating upon the berry or grain, of wheat for instance, to crack oft' the bran, and then by a shaving action to reduce the grain to iiour and discharge it as soon as possible, avoidin grubbin g our on fiour, which has the effect of heating it and causing it to form in dough-balls inside' of the hoop and spout, as well as giving it a tendency to sour.

To enable one skilled in the art to which my invention appertains tt) make and understandv my invention, I will proceed to describe it.

The stone shown in the drawings is the bedstone; but the dress on the runner is substantially the same, and the runner dressed as shown is designed to revolve with the sun. The face of the stone is divided by furrows A into sections of land,77 and the base-lines B of said furrows are tangential to the periphery of the hollow or cup C in thc center of the stone. These furrows are of peculiar shape, the sides being inclined and meeting at the bottom or base line B at an angle. On the side on which the berry rises the inclined plane is divided into two inclines, D E, and two steps or cutting-edges, F G. The drag-edge H is made of such an angle with the plane ot' the stone as to be free from any tendency to retard the meal, which is a common fault in the old dragedge, which is at right angles to the face of the stone. The upright drag-ed ge collects dead meal, retarding the progress of the grinding, causing friction, and generating heat. Twothirds ofthe width of the furrow is occupied by the planes DE and one-third by theincline plane or drag-edge H. The land or triangular space between the main furrows A is again divided by furrows I, which have the double incline D E and thedragedge H', similar to the correspondingV portions in the main furrow A, excepting that the drag-edge H is cut with ne lines parallel to the base lines or sides of the furrow.

The lower planes, E E', of thefurrowsA and I, respectively, are marked with a diamondpointed bit or steel pick. The outer three inches of their length is marked with lines at an angle oftwen ty-two and ahalf degrees (22%0) front of the center of the stonethat is, bearing that angle with a line passing from'the starting-point to thece'nter of the stone. rlhe exterior three inches of the face of the stone K is ruled or marked with fine lines bearing the same angle and the rest of the face with lines parallel to the dragedges of the furrows. The portion ofthe lower inclines,E E,inoluded between the periphery-lines J and the point of intersection of the furrows is marked with lines parallel to the base-lines.

The furrows are polished and straight, and are gaged to a depth and Width, having sharp cutting edges and corners, making cleaner work and requiring less power, as there is but little friction, the line-ed ges answering as bits, and, in connection with those on the other stone, shaving the grain, making a better flour and a better yield than is attainable by a mere mashing process, which is all that many stones are capable of performing. A

It is my aim to make clean work with the grain, and at once dispose of it without rubbing it over again and again and discharging it in a heated condition.

.In case of thepresence of garlic or wild onion in the wheat, which cannot be separated by smut-mill or separator, as its size and weight is so similar to that ofthe wheat,Ihave found that my method of reducing the grain by running it up an incline which is cut in fine lines shaves the garlic and to a considerable extent prevents its becoming mashed into and filling the porous parts of the stone.

Having thus described my invention, what I claim as new, and desire to secure by Let' ters Patent, is-

1. Adoubleinclined plane on that side of the furrow on which the grain rises.

2. Marking with lines, substantially as described,thefrst inclined plane, extendingfrom the base-line of the furrow to the rst step.

3. Marking with lines of the angle described,

or thereabout, the outer portion of the face of the stone, as described.

To the above specification of my improved mllstone-dress I have signed my hand this 8th day of March, 1865.

GABRIEL NATOHER. Witnesses:

STEPHEN THOMPSON, EDWARD H. KNIGHT. 

